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Editorial Team
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Asked: 2026-06-11T12:20:35+00:00

Excerpt from Flight PHP micro framework website: HTTP Caching Flight provides built-in support for

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Excerpt from Flight PHP micro framework website:

HTTP Caching

Flight provides built-in support for HTTP level caching.
If the caching condition is met, Flight will return an HTTP 304 Not
Modified response. The next time the client requests the same
resource, they will be prompted to use their locally cached version

I managed to install the framework and began to harness it.

Being a PHP n00b, any explanation on HTTP level caching is welcome. An expansion on the caching condition would be also great.

Thanx in advance.

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1 Answer

  1. Editorial Team

    “HTTP level caching” simply means “HTTP-level caching”, i.e. caching done through HTTP headers (e.g. Cache-Control, Expires, If-Modified-Since). These headers can be set by either servers or clients.

    Clients can set a cache condition like If-Modified-Since to get updated content only when their cached copy expires. The server sees If-Modified-Since and compares the client’s date to the date on the resource; if the resource is newer, it is served up. Otherwise, the server returns a small 304 Not Modified response to inform the client that nothing has changed since their last request.

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